Theftroof fan mounting bracket



Oct. 10, 1933. H. F. PETERS THEFTPROOF FAN MOUNTING BRACKET OriginalFiled June 13, I930 EE-irul/ Patented Oct. 10, 1933 Henry FrankPcters,'Washiii'gton, D. C.

Applieationllune is, 1930, Serial No. 461,009

' Renew-ed March 1, 1933 1 Claim. (Cl. Mid-20) This invention relates todevices for attaching electrical fans to walls or other surfaces so thatthey may be proof against unauthorized or surreptitious removal.

In the carrying out of my inventive purpose, I prefer to employ a wallplate or member designed to be attached by suitable fastenings, such asscrews, to a wall or other surface to which the fan is to be secured. Ialso prefer to provide 3. fan plate or member designed to be attached tothe base of the fan, and to so construct the two plates or members thatthey will cooperatetogether in such manner as to conceal both sets offastenings so that they may not be removed while the two plates ormembers are in operative posi tion; and finally I prefer to secure thetwo plates together in a simple and effective manner so that they maynot be separated exceptby one familiar with the construction andequipped with the necessary key or wrench by means of which the twoplates may be unlocked from each other.

The accompanying drawing illustrates one example of a preferredconstruction of the device,

in which:

Fig. 1 is a side elevation illustrating the device in operative positionwith the base portion of a electric fan shown in dotted lines;

Fig. 2 is a front elevation ofthe fan plate or member; r

Fig. 3 is a front elevation of the wall plate or member;

Fig. 4 is a vertical transverse sectional view taken through the device,and

Fig. 5 is a fragmentary horizontal sectional liew taken on line 5-5 ofFig. 1.

Like numerals of reference indicate the same parts throughout theseveral figures, in which (1) indicates the device which includes thefan plate or member (2) and the wall plate or member (3).

The former of these is preferably circular in plan and has a narrow rimportion (4), and a central raised portion (5), the two portions formingan annular wall (6).

Formed in the central raised portion (4) are series of perforations ('7)of a number corresponding to and complemental with the number offastening perforations in the base of the fan to be accommodated bythisfixture. At preferably diametrically opposed points on the periphcry ofthis rim portion (4) are two recesses (8) arranged in a horizontalplane.

Referring now to the wall plate or member (3), it will be seen from Fig.3 that the same is also preferably circular in plan and has a fiatcentral portion (9) suitably perforated at (10) to receive 'riphery ofthe fan plate or member (2) openings (15) are threaded to receivesuitable fastenings (16), such as Allen set screws.

suitable fastenings (11) Fig. 4 by means of which this plate or member(3) may be secured to a wall or other surface.

It will also be seen that substantially the lower half of the wall plateor member (3) is provided with a substantially semi-circular flange (12)l lying parallel with the face (9) of the plate or member (3) but spacedapart therefrom in order to provide a substantially semi-circular recessor chamber (13) It will also be seen that the web (14) which connectsthe edge of the plate or member (3) with the said flange (12) is piercedat preferably diametrically opposite points which are complemental tothe recesses (8) in the pe- These Any other type of suitable fasteningsmay be employed wherein a special wrench or key is necessary in order toremove or loosen the same.

Having thus described the several parts of the preferred embodiment ofmy invention, its operation is as follows: 1 I

The two plates or members (2) and (3) may be made of any suitablematerial as by casting, ma-

chining or otherwise. a

At the location at which the fan is to be established, the wall plateormember (3) is securely fastened, as by screws (11) or the'like passedthrough the screw holes (10) in the plate or member (3). The plate ormember is thus se-" curely fastened in the desired position. The base ofthe fan is then fastened to the fan plate or section (2) by any suitable.fastenings as for instance by round head machine or other bolts (17)passed through theopenings ('7) in the fan plate or section (2) andsecured by nuts (18) against the rear face of the fan plate or section(2). i

When the fan has thus been fastened to its plate or section (2), saidplate or section'being'" of a diameter less than that of. the wall plateor section (3) and which substantially conforms to the curvature of thesemi-circular recess (13) formed on the lower portion of the wall plateor section (3), the fan plate or section (2) with fan attached is passedover the face (9) of the wall plate or section (3) until the rim portion(4) of the fan plate or section (2) enters said substantiallysemi-circular recess on the wall plate or section (3) as shown in Fig.4. When the two plates (2) and (3) are in this position, the fastenings(16) are threaded into their holes (15) until their ends enter withinthe recesses (8) in the periphery of the fan plate or member (2).

These fastenings being set as firmly as possible, the ends of the samemay be covered with any plastic material (19) suitable for the purpose,as shown in Fig. 5. By this means the fastenings as well as their holesmay be concealed, and when painted over can not be detected.

A fan so mounted is in no danger of surreptitious removal. It may beremoved, however, by removing the plastic material (19) and withdrawingthe fastenings (16) by one familiar with the fixture and equipped withthe proper wrench or key for operating the locking fastenings (l6)Having thus fully described the invention and reptitious removal,including a wall plate or member having means to receive fastenings forattaching the plate or member to a wall or other surface, and includinga substantially semi-circular flange spaced apart from the face of thewall plate or member to form a substantially semicircular recess, a fanplate or member including a rim portion and a raised central portion,the latter having means to receive fastenings for attaching the plate ormember to the base of an electric fan, the said rim portion beingprovided with a plurality of recesses and a plurality of fastenings inthe wall plate or member adapted to enter the said recesses in the fanplate or member to lock the said two plates or members together.

HENRY FRANK PETERS.

